The mother is the one who's beyond irresponsible and brainless here, did you know that? If she had spoken up clearly about what was really happening to her, then the father and, more importantly than anything else, the FMC wouldn't have to suffer in this life as well.
Obviously, it's a matter of plot, but if you want to blame someone, curse the mother for her obnoxiuos way of handling things. I mean, the mother was so idiotic as to almost kill the father to "
prove" that she had only "
played with him".
And to further screw things over, she ends up abandoning her daughter without anyone to take care of her. Clearly, she never thought about her daughter's future, or the father's feelings, when she screwed them over like that.
Father is an a*shole then. Anyway, the art is so beautiful.